#!python  
import os,sys  
from xml.etree import ElementTree  
from PIL import Image  
  
def tree_to_dict(tree):  
    d = {}  
    for index, item in enumerate(tree):  
        if item.tag == 'key':  
            if tree[index+1].tag == 'string':  
                d[item.text] = tree[index + 1].text  
            elif tree[index + 1].tag == 'true':  
                d[item.text] = True  
            elif tree[index + 1].tag == 'false':  
                d[item.text] = False  
            elif tree[index+1].tag == 'dict':  
                d[item.text] = tree_to_dict(tree[index+1])  
    return d  
  
def gen_png_from_plist(plist_filename, png_filename):  
    file_path = plist_filename.replace('.plist', '')  
    big_image = Image.open(png_filename)  
    root = ElementTree.fromstring(open(plist_filename, 'r').read())  
    plist_dict = tree_to_dict(root[0])  
    to_list = lambda x: x.replace('{','').replace('}','').split(',')  
    for k,v in plist_dict['frames'].items():  
        rectlist = to_list(v['frame'])  
        width = int( rectlist[3] if v['rotated'] else rectlist[2] )  
        height = int( rectlist[2] if v['rotated'] else rectlist[3] )  
        box=(   
            int(rectlist[0]),  
            int(rectlist[1]),  
            int(rectlist[0]) + width,  
            int(rectlist[1]) + height,  
            )  
        sizelist = [ int(x) for x in to_list(v['sourceSize'])]  
        rect_on_big = big_image.crop(box)  
  
        if v['rotated']:  
            rect_on_big = rect_on_big.rotate(90)  
  
        result_image = Image.new('RGBA', sizelist, (0,0,0,0))  
        if v['rotated']:  
            result_box=(  
                ( sizelist[0] - height )/2,  
                ( sizelist[1] - width )/2,  
                ( sizelist[0] + height )/2,  
                ( sizelist[1] + width )/2  
                )  
        else:  
            result_box=(  
                ( sizelist[0] - width )/2,  
                ( sizelist[1] - height )/2,  
                ( sizelist[0] + width )/2,  
                ( sizelist[1] + height )/2  
                )  
        result_image.paste(rect_on_big, result_box, mask=0)  
  
        if not os.path.isdir(file_path):  
            os.mkdir(file_path)  
        outfile = (file_path+'/' + k).replace('gift_', '')  
        print outfile, "generated"  
        result_image.save(outfile)  
  
if __name__ == '__main__':  
    filename = sys.argv[1]  
    plist_filename = filename + '.plist'  
    png_filename = filename + '.png'  
    if (os.path.exists(plist_filename) and os.path.exists(png_filename)):  
        gen_png_from_plist( plist_filename, png_filename )  
    else:  
        print "make sure you have boith plist and png files in the same directory"  